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2015 ; 36
(9
): 560-7
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gab.com Text
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English Wikipedia
Apelin, Elabela/Toddler, and biased agonists as novel therapeutic agents in the
cardiovascular system
#MMPMID26143239
Yang P
; Maguire JJ
; Davenport AP
Trends Pharmacol Sci
2015[Sep]; 36
(9
): 560-7
PMID26143239
show ga
Apelin and its G protein-coupled receptor (GPCR) have emerged as a key signalling
pathway in the cardiovascular system. The peptide is a potent inotropic agent and
vasodilator. Remarkably, a peptide, Elabela/Toddler, that has little sequence
similarity to apelin, has been proposed as a second endogenous apelin receptor
ligand and is encoded by a gene from a region of the genome previously classified
as 'non-coding'. Apelin is downregulated in pulmonary arterial hypertension and
heart failure. To replace the missing endogenous peptide, 'biased' apelin
agonists have been designed that preferentially activate G protein pathways,
resulting in reduced ?-arrestin recruitment and receptor internalisation, with
the additional benefit of attenuating detrimental ?-arrestin signalling.
Proof-of-concept studies support the clinical potential for apelin receptor
biased agonists.